I have a couple of these. £50 is about right for a very good condition one, however if it’s mint and especially if it’s boxed…. then you could pay anything up to £75 or even more. In Slovakia and the Czech Republic, they can fetch considerably more.
**I should add, I’ve had mine a while and neither were mint. I paid between £25-40 for each of them**
CZ 200T/200 S Hunter/200 S Green/Slavia ZVP/612/614/615/618/620/622/624/625/627/630/631/634/ZVS Perun 734/CZ236-1/Tex3/86/Brno ZII/ZV3/ZV4/VZ47/APP661/Relum/Mars 618/Stella 518/Predom 188/170/Yunker 1/2/Lov21/Baikal IJ22/IJ38/Vostok/IZH61/IZH53M/MP512M/MP654K/MP661K